I work in the tech industry. I live on a farm.
We do not have a sprawling farms with hundreds of acres. Our farm is less than five acres. We have two homes, a barn, a shop and cross pastured land. We use the land to raise our own meat. We raise dairy and meat goats and cows, chickens, turkeys, hogs, sheep and lamb. We like to say that our animals were conceived here, born here, raised here, died here, and were processed here.
We know exactly what is in our meat. Mothers milk, hay, grass, alfalfa, corn, oats, peas, wheat, rye, barley and a few treats like salted peanuts and apples. They also get, do to the naturally low levels in our soil, a magnesium supplement. That is it.
We have friends who grow the hay and grains we get, some who raise veggies (we only raise a few items). The barter system goes a long way.
Why do we do it? I find myself looking at the paragraph above, "We know exactly what is in our meat." Do you? After we process an animal, they are kept in one of our six freezers. Have some for us and some we barter/sell from. When they are not used, they are unplugged.
...Also, running a small farm, our only "equipment" is a pickup, a four horse stock trailer, and a bobcat loader with two attachments. The cost of entry is not too bad.
Try it, you may like it.